Dispensing valve
First Claim
Patent Images
1. In a dispensing valve having a flat valve seat disk arranged in a valve housing in tight and leak-proof manner, said valve seat disk having an in-flow aperture and an out-flow aperture for the medium dispensed, and a flat valve regulating disk having one surface in contact with said valve seat disk which can be turned by means of a spindle;
- the improvement comprising;
said inflow aperture and out-flow aperture being arranged on a hole circle and offset from each other by approximately 90°
;
a semi-circular transfer flow passage recessed into said one surface of the valve regulating disk, said flow passage being positioned along a center line of said hole circle and extending over approximately three quarters of said hole circle circumference, said transfer flow passage comprising a first portion extending over a first arc section of approximately 90° and
having a constant cross section, and a second portion extending over a remaining arc section of approximately 180°
, said second portion being in the form of a semi-cone cut on the cone axis at an angle of taper of approximately 10° and
arranged with the hole circle as the mean axis such that said second portion has a gradually diminishing cross-section, said transfer flow passage providing a fluid connection between said in-flow aperture and said out-flow aperture, said flow passage providing variable through-flow cross-section depending upon the position of rotation of the valve regulating disk.
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Accused Products
Abstract
A valve includes valve disks, one fixed and the other rotatable. The fixed disk includes in-flow and out-flow apertures. The rotatable disk is rotatable on a surface of the fixed disk to control through-flow volume and includes a semi-circular transfer flow passage recessed into its surface. The flow passage includes at least a tapered portion to provide more precise through-flow volume control.
35 Citations
1 Claim
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1. In a dispensing valve having a flat valve seat disk arranged in a valve housing in tight and leak-proof manner, said valve seat disk having an in-flow aperture and an out-flow aperture for the medium dispensed, and a flat valve regulating disk having one surface in contact with said valve seat disk which can be turned by means of a spindle;
- the improvement comprising;
said inflow aperture and out-flow aperture being arranged on a hole circle and offset from each other by approximately 90°
;
a semi-circular transfer flow passage recessed into said one surface of the valve regulating disk, said flow passage being positioned along a center line of said hole circle and extending over approximately three quarters of said hole circle circumference, said transfer flow passage comprising a first portion extending over a first arc section of approximately 90° and
having a constant cross section, and a second portion extending over a remaining arc section of approximately 180°
, said second portion being in the form of a semi-cone cut on the cone axis at an angle of taper of approximately 10° and
arranged with the hole circle as the mean axis such that said second portion has a gradually diminishing cross-section, said transfer flow passage providing a fluid connection between said in-flow aperture and said out-flow aperture, said flow passage providing variable through-flow cross-section depending upon the position of rotation of the valve regulating disk.
- the improvement comprising;
Specification
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Current AssigneeFriedrich Grohe AG (LIXIL Group Corp.)
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Original AssigneeITT Industries (ITT, Inc.)
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InventorsBernat, Georg
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Primary Examiner(s)Rosenthal, Arnold
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Application NumberUS05/934,176Time in Patent Office657 DaysField of Search251/208US Class Current251/208CPC Class CodesF16K 3/32 Means for additional adjust...
